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(No Model.) Y* 4 Sheets-Sheet 1. D. MCO. SMYTH.

.BOOK SEWING MACHINE.

Patented Mar. 8, 1888.

(No Model.)

4 Sheets-Sheet 2. D. M00. SMYTH.

- BOOK SEWING MACHINE.

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W. ,y 6. w. L4 M m "rn .d 7% e a d N (No Model.) 4' Sheets-Sheet 3.

13.1808. SMYTH.

. BOOK SEWING MACHINE. Y No. 878,985. f Patented Mar. 8, 1888.

(No Mode1.) 4 Sheets-Sheet 4.

D. MCG. SMYTH. BooK SBWINGMAGHINE.

No. 878,985. Y Patented Mar. 6,1888.

y the machine.

Ntra ES PATENT Orme.

DAVID MOCONN ELL SMYTH, OF HARTFORD, CONNECTICUT, ASSIGNOR TO TUE SMYTHMANUFACTURING COMPANY, OF SAME PLACE.

BOOK-SEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 378,985', dated March6, 1888.

Application filed August 2i, 1887. Serial No. 248.004. (No model.)

To aZZ whom it may concern.-

Be it known that I, DAVID MCCONNELL SMYTH, of Hartford, in the county ofHartford and Stat-cof Connecticut, have invented an Improvement inBook-Sewing Machines, of which the following is a specification.

The object of this invention is to sew the folded signatures byreciprocating eye-pointed needles, each of which carries a thread andenters one of the end saw-cuts of the signature, and the thread islooped around a vibrating bodkinthat is within the second sawcut fromthe top or bottom end of the signature, thereby 'detaining around saidbodkin the successive loops of thread, and a cord or tape is threadedinto the bodkin and drawn through the loops of thread in the signaturesin the act of lifting the sewed Volume off the bodkins.

In the drawings,'Figure 1 is a plan view of Fig. 2 is an elevation. Fig.3 is a sectional plan view below the lineaqw, Fig. 2. Fig. t is across-section at the line y y, Fig. 1. Fig. 5 shows the back of a bookwith the signatures sewed together, and Fig. 6 is a perspectiveviewillustrating the manner in which the paper at the back edge of thesignature is cut and bent up atan inclination.

The posts A of thel machine are connected by the horizontal bars B, andB are the crossbars to the back-frame C. The main drivingshaft D issupported in bearings upon the horizontal bars B and C. This shaft D isdriven by suitable power, and at the end thereof is a cam, E, that actsupon the roller 2 of the rocking lever F, and from the ends of thisrocking lever are rods G, connecting to the lever.- arms G', pivoted at4 to one of the horizontal. frame-bars B, and at the upper ends of theselever-arms are connections to the sliding needlebars H in bearings 5upon the frame, and these needle-bars carry the needles I, which are inline with the centers of the needle-bars, and upon the frame is abracket-guide, K, perforated for the passage of the needle and slottedforthe reception of the swinging sheet-holding arm L. The spring 12 actsupon the rocking lever F. to keep the roller 2 toward the cam E, andcauses the needles to pass into the folded signature in performing thesewinge 'The needle-bars and needles are reciprocated at the proper timeby the mechanism aforesaid, and the sheet-holding arm L is swung aroundhorizontally by the vertical shaft Z, gear-wheel 6, rack 7, and alever-arm, 8, pivoted at 9, and having a curved slot in it for thepassage of the crank-pin 10, that projects from the face of the cam E.'The shape of this curved slot is such that after the sheetholding armhas been swung around to place it will remain stationary during the timethat the crank-pin is traveling in the arc of a circle that forms thecurved part of the slot, and during this time the sewing operation isperformed, as hereinafter described.

The bodkin-holder N receives the vertical bodkins n, and these areguided at their lower ends by the stationary plate 13 upon a bracketfrom the frame of the machine, and the vertical slide-bar O of thebodkin-holder passes through the same bracket and is also guided at itslowerl end in a projection upon the crossbearer C2. The bodkin-holdcrand its slide receive a vertical reciprocating motion at the proper timeby any suitable means. I have shown the arm Q2 pivoted at land connectedat the other end to the slide-bar O and acted upon by the edge of thecam E, and the parts are so timed that the eye-pointed needles enter thefolded signature and the eyes of such needles pass beyond the bodkins,and then the needles draw back slightly and the bodkins rise and passthrough the loops of needlethreads and hold such threads while theneedles draw back. This operation is performed in each signature untilthe proper number of signatures have been united together and are to beremoved as a volume, which is done by hand after cords or threads havebeen inserted through the eyes at the upper ends of the bodkins, so thatthe cords or threads are drawn into the saw-cuts and into the loops ofthreads ICO The table may be countcrbalanced by a spring; but I haverepresented a sheet-holding platform, Q,with a sliding column, Q', thatis connected bythe walking-beam Q to the stand* y varm L passes into thenotch in the bracket K at the time the sheet is brought up to positionfor being sewed and the folded back edge of the signature is adjacent tothe gages 14 on the frame B, and it is preferable to employ, inaddition, the springgages 15, the lower ends of which are slightly belowthe eyepointcd needle, and these gages yield laterally as the needlespass into the fold of the signature and prevent the needle becoming bentwhen the papel' of the signature is thick or when the number of leavesincluded in the signature is great.

The edge ot' the sheet-holding arm L is grooved forthe passage of thereciprocating needles, and it is also notched at the places where theloops ci' needle-thread are thrown out vfor the bodkins to pass through,as aforesaid.

Upon the horizontal bar B are brackets 16, forming bearings for therockshaft R, and to this a slight movement is given at the proper timeby a Cam upon the shaft D, a lever, Rf, rock-shaft It, coiineetingrod17, and cranle arm 18 on the rock-shaft R, the spring It serving to holdthe arm It' toward the cam.

rIlhe arm S, fastened upon the rock-shaft It, extendsontto thepresserbarS, which presserbar is notched to allow the bodkins to ascend throughthe loops of needle-thread and to project above the sewed signature asthe presserbar is pressed upon the sewed signatures, causing them andthe table P to descend. rIhis rock-shaft is moved in the other directionby the action of the spring R3 and raised sufficiently for the arm L toswing in beneath it and present a new signature in position for beingsewed.

I make use of another rockshaft, T, in the bracket 1G, from which extendthe lingers t, and these fingers act at their outer ends upon the topand bottom portions of the back of the folded signature to press theseportions of the paper beyond the end saw-cuts downwardly and out of theway of the reciprocating needles, so that such needles will enter thefolded back of the signature at the end saw-cuts, and in order to movethe rock-shaft T and ingers t, I have represented the crank-arm 20connecting rod 21, shaft and crank-arms 22 23, and link 24 to a rocker,T2, against which the crank-pin 10 acts to give the slight movementnecessary at the proper time. It is preferable to make the iingertsufficiently strong tor the edge thereof thatis adjacent to thesheet-holding arm at the end of the notch therein to act as a shearandcutthepapcrthrough the folded back and bend thev paper down and out ofthe way of the looper or needle. unnecessary to saw the signatures atthe places where the needle passes in or emerges.

The spools of thread are upon suitable supports, and the threads passthrough the guideeyes n and thence through the eyes of the needles, andthe sewing as performed by this machine is illustrated in Fig. 5,wherein cords 30 are shown as having been drawn through the loops ofthread by the bodkins, and the thread y passes out from one signatureinto the next at the end sawcuts.

In consequence of the arms L swinging over and beyond theplatform Q thismachine may be partially automatic in the feedingin of the signatures.The vertical detainers 31 are stationary, and vthey pass through holesin the platform, and the backs of the signatures, as theylie in a pileupon the platform Q, are against these detainers, except the topsignature, which is above the tops of these detainers, so as to becarried off by the arm L as it swings and passes into the fold ofthesignature and conveys it tothe place where it is sewed. The table P isforced down thethickness of one folded signature, and theplatform Q israised to the same extent, thereby bringing another folded signatureabove the top ot' the vertical detainers 3l.

In this machine I am also enabled to feed the sheets vin and with butlittle personal at tention by placing the successive sheets over thetable l? between the vertical gages 33 on the presser-bar S and thevertical gage 34 upon an arm, 35, supported by the standard 36. This arm35 is sufficiently high to allow the sheet-holdcr to swing in beneathit, and the signatures are printed so that when folded one margin iswider than the other. The narrow margin is placed downward and the widermargin rests upon the spring-plate 37, so that the arm L swings in tothe middle of the signature, as seen in Fig. 4t, and carries the sameThis renders it IOO IIO

in beneath thepresser-bar when that has been raised. be thus piledbetween the gages 33 and 34, and they vill rest upon the plates 37, andthe lowest one in the pile will hang in an open position to receive theswinging sheet-holder, which passes into the signature and carries it inbeneath the presser-bar to the sewing mechanism.

I claim as my invention- 1. The combination, in book -sewingmachines,with the reciprocating eye-pointed needles, of looping-bodkins,a holder for the bodkins, and mechanism for reciprocating the same andpassing the points ofthe bodkins into the loops of needle-thread withinthe signature and holding suchloops ot' thread while the needles arewithdrawn, substantially as set forth.

2. The combination, in a book-sewing machine, of reciprocatingeye-pointed needles, looping-bodkins, mechanism, substantially as Morethan one sheet at a time may k.

aveces 3 set forth, for actuating the parts, a table for supporting thesignatures while being sewed, and a presserbar for Yforcing down thesewed signatures and table, substantially as set forth.

3. The combination, in a booksewing Inaohine, ofaswinging sheet-holdingarm, a wheel and rack for actuating the same, reciprocating eye-pointedneedles, looping-bodkins and mechanism for moving the same, apresser-bar, a roclcshaft for actuating the same, and fingersforpressing down the end portions of the folded signature at the backedge, and needleholders, and needles for passing into the fold of thesignature, substantially as set forth.

4. The combination, with the reciprocating eye-pointed needle andlooping-bodkins and mechanism for moving the same, of a table to supportthe signatures while being sewedfa presser-bar for forcing down thesewed signatures and table, a platform for holding the uni sewed'signatures, and ,a walking-beam connecting the platform and the table,so that the platform and unsewed signatures are elevated by thedepression of the table as` the sewed signatures accumulate thereon,substantially as set forth.

5. The combination, in a book-sewing machine, of mechanism for sewingthe signatures, the swinging sheetholding arm for receiving andconveying the signatures to the sheet-sewing mechanism, vertical gagesbetween which the sheets to be sewed are to be placed, an arm forholding two of the gages and below which the sheet-holding arm swings,and plates for sustaining one edge of the folded signature to allow suchsignature to hang for the sheet` holding arm to swing into it,substantially as setforth.

6. The combination, in a book-sewing machine, of reciprocatingeye-pointed needles and their needle-bars, a sheet-holding arm grooveduponits edge for the passage of the eye-pointed needles, and being alsonotched, loopingbodkins, mechanism for supporting and reciproA eatingthe same, fingers for pressing down the paper at the fold of thesignature at the end portions of the back, and a presserbar andmechanism, substantially as specified, for giving motion to therespective parts to carry in the sheet and perform the sewing,substantially as set forth. l

7. The combination, with the sheet-holding arm provided with a notch, ina book-sewing machine, of a moving finger that acts as a shear byengaging the edge of the said notch in the arm to cut the fold of thepaper and bend the paper aside for the passage of the needle,substantially as set forth.

Signed by me this 10th day of August, A. D. 1887.

DAVID MCCON NELL SMYTH.

Witnesses:

- Gao. T. PINCKNEY, WILLIAM G. Morr.

